Vacuum former



FIG. 1 is a top right side perspective view of a "vacuum former" showing our new design;

FIG. 2 is a bottom left side perspective view thereof;

FIG. 3 is a rear elevational view thereof; and,

FIG. 4 is a top right side perspective view thereof showing various component parts of the "vacuum former" in use. 

The ornamental design for a "vacuum former," as shown and described. 